National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

66°F

19°C

Humidity 50%
Wind Speed W 7 mph
Barometer 29.91 in (1012.3 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 23 Apr 7:54 pm EDT
Extended Forecast for

Brownstown PA

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 78. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 56. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 11am. High near 67. South wind 5 to 7 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 44. Northwest wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Showers
    Likely

  • Sunday

    Sunday: A slight chance of showers before 2pm. Partly sunny, with a high near 60. Chance of precipitation is 20%.

    High: 60 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: A chance of showers after 2am. Partly cloudy, with a low around 48. Chance of precipitation is 50%.

    Low: 48 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. Calm wind.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 78. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 56. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers, with thunderstorms also possible after 11am. High near 67. South wind 5 to 7 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 44. Northwest wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers before 2pm. Partly sunny, with a high near 60. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Sunny, with a high near 68.
Monday Night
A chance of showers after 2am. Partly cloudy, with a low around 48. Chance of precipitation is 50%.
Tuesday
Showers, mainly after 8am. High near 65. Chance of precipitation is 90%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Wednesday
A chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 63. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Brownstown PA
 40.34°N 78.92°W (Elev. 1388 ft)
Last Update:
8:05 pm EDT Apr 23, 2026
Forecast Valid:
8pm EDT Apr 23, 2026-6pm EDT Apr 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation